Brother FAX-2840 Basic User's Manual page 93

Examples of poor print quality
Hollow print
All black
ABCDEFGH
abcdefghijk
A B C D
a b c d e
0 1 2 3 4
White lines across the page
ABCDEFGH
abcdefghijk
A B C D
a b c d e
0 1 2 3 4
Lines across the page
Recommendation
 Make sure that you use paper that meets our specifications.
Rough-surfaced paper may cause the problem. (See Acceptable
paper and other print media uu page 15.)
 Choose Thick in the machine's Paper Type menu setting or use
thinner paper than you are currently using. (See Paper Type
uu page 15.)
'
 Check the machine s environment. Conditions such as high
humidity can cause hollow print. (See Product Safety Guide:
Choose a safe location for your product.)
 The drum unit may be damaged. Put in a new drum unit. (See
Replacing the drum unit uu page 45.)
 Clean the corona wire inside the drum unit by sliding the green
tab. Be sure to return the green tab to the home position (a). (See
Cleaning the corona wire uu page 52.)
 The drum unit may be damaged. Put in a new drum unit. (See
Replacing the drum unit uu page 45.)
 The fuser unit may be contaminated. Call Brother Customer
Service or your local Brother dealer.
 Make sure that you use paper that meets our specifications. A
rough surfaced paper or thick print media can cause problems.
 Make sure that you choose the appropriate media type in the
machine's Paper Type menu setting. (See Acceptable paper
and other print media uu page 15.)
 The problem may disappear by itself. Print multiple pages to clear
this problem, especially if the machine has not been used for a
long time.
 The drum unit may be damaged. Put in a new drum unit. (See
Replacing the drum unit uu page 45.)
 Clean the corona wire of the drum unit. (See Cleaning the corona
wire uu page 52.)
Clean the drum surface. (See Cleaning the drum unit

uu page 53.)
 The drum unit may be damaged. Put in a new drum unit. (See
Replacing the drum unit uu page 45.)
Troubleshooting
85
B